11

I was looking around to understand how to chmod (change permissions of a file) a file on Windows 7 Power Shell. So I have found different (wired for me, because I am used to simple chmod command) code snippets and wondering would't it be simple to wrap that wired commands in a chmod function and write it on in a $profile file of Power Shell. I guess this is what many ex-linux shell, but now power shell users would like to have for changing permissions of a file.

I am new to Power Shell. Please help me with the code.

Narek
  • 38,779
  • 79
  • 233
  • 389
  • Have you tried `Get-Help Set-ACL -full`? http://chrisfederico.wordpress.com/2008/02/01/setting-acl-on-a-file-or-directory-in-powershell/ – CB. Sep 13 '12 at 09:50

2 Answers2

8

Here is an example with the native way, using ACL and ACE. You have to build your own functions arround that.

# Get the Access Control List from the file
# Be careful $acl is more a security descriptor with more information than ACL
$acl = Get-Acl "c:\temp\test.txt"


# Show here how to refer to useful enumerate values (see MSDN)
$Right = [System.Security.AccessControl.FileSystemRights]::FullControl
$Control = [System.Security.AccessControl.AccessControlType]::Allow

# Build the Access Control Entry ACE 
# Be careful you need to replace "everybody" by the user or group you want to add rights to
$ace = New-Object System.Security.AccessControl.FileSystemAccessRule ("everybody", $Right, $Control)

# Add ACE to ACL
$acl.AddAccessRule($ace)

# Put ACL to the file
Set-Acl "c:\temp\test.txt" $acl
(Get-Acl "c:\temp\test.txt").access
Read-Host "--------- Test Here --------------"

# Remove ACE from ACL
$acl.RemoveAccessRule($ace)
Set-Acl "c:\temp\test.txt" $acl
(Get-Acl "c:\temp\test.txt").access
JPBlanc
  • 70,406
  • 17
  • 130
  • 175
  • If you want to remove inheritance ($true) and not copy existing ACLs ($false) you can do so by running ` $Acl.SetAccessRuleProtection($true,$false)` before `$acl.AddAccessRule($ace)` – Florian Feldhaus Jun 11 '18 at 21:04
3

Look at the following:

  • Set-Acl - Run Get-Help Set-Acl -Full

  • attrib.exe - Standard Windows tool for setting file attributes. Not Powershell-specific, but of course still works in Powershell.

  • icacls.exe - Standard Windows tool for setting ACLs. Not Powershell-specific, but of course still works in Powershell.

Source: http://www.cs.wright.edu/~pmateti/Courses/233/Labs/Scripting/bashVsPowerShellTable.html Just do a web search for chmod powershell.

latkin
  • 16,402
  • 1
  • 47
  • 62